A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5975-01-564-1851
NSN 5895-00-883-3267
NSN 5950-00-458-8361
NSN 6150-01-142-3177
NSN 5905-01-056-6039
NSN 5910-01-378-7678
NSN 6110-00-497-3505
NSN 6105-01-017-2748
NSN 5925-00-259-7486
NSN 2925-01-277-0873
NSN 5905-00-820-0140
NSN 5910-01-571-7621